Malicious PDF — malware analysis report

Static analysis result for SHA-256 67df1354513ceed9…

MALICIOUS

PDF

44.8 KB Created: 2020-08-01 13:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cdcbc6ae6b2694ed018434a7166b7ce SHA-1: 282839d54ef25f564e824d995db9894638d28de1 SHA-256: 67df1354513ceed9cb198bd7a3da5a7c71cd841ad0a48e380602c8047542159c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains, forming a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=curved+dragon+greatsword', is identified as a malicious redirector, indicating a likely attempt to lead users to malicious content or phishing sites. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=curved+dragon+greatsword
    • http://files.suzannewandling.com/uploads/1/3/1/3/131381540/fagafujozot.pdf
    • http://files.cherishwifelife.com/uploads/1/3/2/6/132683246/xaxonikevami.pdf
    • http://files.abspate.com/uploads/1/3/0/7/130739427/4cc0a6585.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/7115/8949/files/5730115695.pdf
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/duvipamezolekisek.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/23531385772.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/25623583947.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/dijozerebofatusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/thomas_calculus_11th_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/bexitutup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/rotomegasibekamanowolog.pdf
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/pulutobesuror.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/fuwixuwomilokokamomedasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/11983935024.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/nafezofamoxivikusokido.pdf
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/pinazuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/jevidoliradezowina.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000668e.bin
48bb38631f9ce7504f3d2e4879add70e60a38b644a571ea84d9e21b2554ee7f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x668E 5020 bytes
font_01_sfnt_off000077be.bin
7e614f78ca06861682288cea2c8cd078ea5a2a5f03579b23e751f88044ac364d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BE 14844 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.